方管聚合物气辅挤出口模设计  

作　　者：任银娥 谢品平 

机构地区：[1]乌鲁木齐市隆盛达环保科技有限公司,新疆乌鲁木齐830032

出　　处：《中国科技纵横》2015年第14期70-72,共3页China Science & Technology Overview

摘　　要：挤出口模在挤出成型中发挥着重要作用，其口模设计的是否合理关系着挤出制品的质量和挤出成本。因此本文应用polynow软件，采用PTT粘弹本构，分析方管口模几何尺寸与气辅挤出口模内外的各场量之间的变化规律（如改变滑移段长度、口模壁厚及口模截面积观察挤出压降、速度及剪切速率的变化）。确定出方管挤出口模的合理几何结构和尺寸，设计出方管型气辅挤出口模，从而提高口模设计精度和产品的质量，并降低生产成本。Die as an important position in the field of polymer extrusion processing, it＇s die design related to the quality of extrusion products and cost. In the thesis, use the module of inverse extrusion ofpolyflow software with PTT Viscoelastic model to analysis the change rules of the geometry of the die and flow fields in the die（such as change the length of slip, die thickness and cross-sectional area of the die to observe the change of extrusion pressure, speed and shear stress）.Worked out the shapes and sizes of section extmsion die, then design the square tube gas-assisted extrusion die, thereby improving the quality of extrusion products and accuracy of the die design, and reduce production costs.

关 键 词：气辅挤出 挤出胀大 数值模拟 口模设计 

分 类 号：TQ336.42[化学工程—橡胶工业]